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objtool: Uniquely identify alternative instruction groups

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Assign a unique identifier to every alternative instruction group in
order to be able to tell which instructions belong to what
alternative.

[peterz: extracted from a larger patch]
Signed-off-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
This commit is contained in:
Alexandre Chartre
2020-04-14 12:36:11 +02:00
committed by Peter Zijlstra
parent 9e98d62aa7
commit 13fab06d9a
2 changed files with 7 additions and 2 deletions
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3
tools/objtool/check.h
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@@ -30,12 +30,13 @@ struct instruction {
unsigned int len;
enum insn_type type;
unsigned long immediate;
bool alt_group, dead_end, ignore, ignore_alts;
bool dead_end, ignore, ignore_alts;
bool hint;
bool retpoline_safe;
s8 instr;
u8 visited;
u8 ret_offset;
int alt_group;
struct symbol *call_dest;
struct instruction *jump_dest;
struct instruction *first_jump_src;